Hello "dergiss". First of all: the term "Betonestrich" does not exist. The differences between concrete and screed are numerous and range from the differing installation techniques to the aggregate used. But that is not the topic here. Do you have a residential property? Then you absolutely cannot do without a screed as a load distribution layer. Where - please - should the insulation layer as an effective thermal and/or impact sound insulation measure be installed? An epoxy resin coating does not necessarily result in a concrete look. Also, please do not forget the necessary subfloor pretreatment measures so that the success of a coating measure can not only be expected but also achieved. In this context, the term "Ausdünstungen" came up from another direction. Just a note on this: for residential areas, only synthetic resins are approved that have successfully passed the AgBB test scheme for building products! No, I would build up differently (from bottom to top): - Concrete ceiling or floor slab, the latter of course with sealing according to DIN 18195-5 - Thermal insulation on the ground floor and impact sound insulation on the upper floors - PE foil as a cover - Cement screed CT-C35-F6-S45 with the note that a synthetic resin sealing will be applied on this - Scratch filler (optional) - Pigmented sealing or better: industrial filler with concrete look and final sealing ------------------------------------ The costs for a synthetic resin sealing with prior scratch filler are around €60/m² net, for a decorative filler (not listed here) we are at about €95/m². PS: for €12 to €45, dissatisfaction is already preprogrammed because your expectations for the floor in terms of appearance and durability will certainly not be met. From a cost perspective, the (elaborate but necessary) subfloor preparation measures are missing! Regards: KlaRa